Current game seems smooth now.
There might be a few balance things left, like leech starships, but over all its not bad at all.
Even lost a multiplayer game du to me thinking too hihgly of my defence. Even on normal unit caps and Epic speed my own forcefields seem to go down rather fast unless I stack up a few Mk II ^^
One thing: when I lost my command, I got a nifty mobile command thingy on my friends homeworld. But, he was slo under attack. My home thingy got tractored and killed several times over, making AIP going up quite a lot. Might I suggest making them immune to tractor platforms?